—Many houses near the airport were destroyed by the wind.
—Well, the wind ________ have been very strong.
| A．can |
| B．must |
| C．need |
| D．can’t |
--- I hear Warren ______ in a middle school.
--- What? I can’t imagine him ______ as a teacher.
| A．teach; to work | B．teaches; working | C．teaches; to work | D．teach; working |
Failure is the mother of success. ______ your courage and you’ll succeed.
| A．Keep off | B．Keep out | C．Keep up | D．Keep on |
_______ some of this juice--- Perhaps you’ll like it.
| A．Trying | B．Try | C．To try | D．Have tried |
One of the sides of the board should be painted yellow, and _______.
| A．the other is white | B．another white | C．the other white | D．another is white |
The picture ______ on the wall is painted by my nephew.
| A．having hung | B．hanging | C．hangs | D．being hung |